EP 0787250 B1 20030402 - HYDROGEN-NATURAL GAS MOTOR FUEL
Title (en)
HYDROGEN-NATURAL GAS MOTOR FUEL
Title (de)
WASSERSTOFF-ERDGAS-MASCHINENBRENNSTOFF
Title (fr)
MELANGE GAZ NATUREL/HYDROGENE UTILISE COMME CARBURANT DE MOTEUR
Publication
Application
Priority
- US 9505475 W 19950503
- US 23790094 A 19940504
- US 42862695 A 19950425
Abstract (en)
[origin: US5666923A] A hydrogen and natural gas fuel mixture for internal combustion engines is provided for vehicle engines such as those used in standard production engines for automobiles, trains and lawn mowers. The gaseous fuel for operating a vehicle combustion engines includes approximately 21 to 50% Hydrogen and the rest natural gas constituents such as combinations of Methane, Carbon Dioxide, Nitrogen, Ethane, Propane, Iso-Butane, N-Butane, Iso Pentane, N-Pentane, and Hexanes Plus. A fuel mixture of approximately 28 to 36 percent Hydrogen and a air fuel equivalence ratio of approximately 0.625 is an extreme lean burn condition that yields hydrocarbon emission levels of less than approximately 104 ppm (0.84 hm/hp hr.). Current internal combustion engines that are in mass production can take this alternative fuel without any substantial modifications to their systems. This alternative fuel is lean burning and emits emissions that are below current legal standards. The novel fuel mixture can be used in internal combustion engines for automobiles, lawnmowers, and trains. A control system for allowing the internal combustion engines to operate at extreme lean burn conditions is also provided for use with both a carburetor and fuel injection system. For a carburetor system, a secondary demand regulator system can kick in when a throttle is wide open and will allow additional fuel to pass through the system to meet instantaneous power demands such that occur when full throttle depression is insufficient for severe grade climbing, expressway merging, passing and the like. The fuel injection system can also be programed with a control algorithm that will select air fuel ratios. The computer control can increase fuel with respect to air when the throttle reaches a selected point of travel. The computer control can also dynamically change the hydrogen and natural gas fuel mixture ratio dynamically while the vehicle is being operated based on engine power demands and emissions.
IPC 1-7
IPC 8 full level
C10L 3/06 (2006.01); F02B 43/00 (2006.01); F02B 43/04 (2006.01); F02B 43/10 (2006.01); F02B 43/12 (2006.01); F02D 19/02 (2006.01)
CPC (source: EP US)
C10L 3/06 (2013.01 - EP US); F02B 43/04 (2013.01 - EP US); F02B 43/10 (2013.01 - EP US); Y02T 10/30 (2013.01 - EP US); Y10S 123/12 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 5666923 A 19970916; AT E236351 T1 20030415; CA 2189444 A1 19951116; CA 2189444 C 19990713; DE 69530219 D1 20030508; DE 69530219 T2 20040219; EP 0787250 A1 19970806; EP 0787250 A4 19970806; EP 0787250 B1 20030402
DOCDB simple family (application)
US 42862695 A 19950425; AT 95918924 T 19950503; CA 2189444 A 19950503; DE 69530219 T 19950503; EP 95918924 A 19950503